Home / 2,742.75-3,784.83-1,547.75

Finding the Fourth Proportional to 2,742.75, 3,784.83 and 1,547.75

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Solution

The fourth proportional to 2,742.75, 3,784.83 and 1,547.75 is: 2,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.75 : 3,784.83 = 1,547.75 : x
  2. Step 2: Convert to fraction form
    2,742.75/3,784.83 = 1,547.75/x
  3. Step 3: Cross multiply
    2,742.75x = 3,784.83 × 1,547.75
  4. Step 4: Simplify right side
    2,742.75x = 5,857,951.71
  5. Step 5: Solve for x
    x = 5,857,951.71/2,742.75
  6. Step 6: Final answer
    x = 2,135.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.